package javatest;

/*
public class test1 {
    public static void main(String[] args){
        int i = 1;
        int sum = 0;
        for(i = 1;i <= 100; i++){
            sum += i;
        }
        System.out.println("sum =" + sum);
    }
}
 */

/*
public class test1 {
    public static void main(String[] args) {
        int i = 1;
        int sum = 0;
        do {
            sum += i;
            i++;
        } while (i <= 100);
        System.out.println("sum =" + sum);
    }
}
 */

public class test1 {
    public static void main(String[] args) {
        int i = 1;
        int sum = 0;
        while (i <= 100) {
        sum += i;
        i++;
        }
        System.out.println("sum =" + sum);
    }
}